@article{ref1,
title="On the Adaptation of Different Modes of Illuminating Lighthouses; As Depending on Their Situations and the Object Contemplated in Their Erection",
journal="Philosophical transactions of the Royal Society of London",
year="1837",
author="Barlow, William Henry",
volume="127",
number="",
pages="211-225",
abstract="<p>[Abstract unavailable]</p>",
language="",
issn="0261-0523",
doi="",
url="http://dx.doi.org/"
}